Winding machine



April 1940- a. w. AMMANN ET AL 2,1 7, 17

WINDING MACHINE Filed March 31, 1958 ll Sheets-Sheet 1 Y INVENTORS B.W.AMMA NN .BACHMANN April 16, 1940- s. w. AMMANN ET AL 1 WINDING MACHINE Filed March 51, 1938 ll Sheets-Sheet 2 FIGS.

I N VENTORS B W. A M

Y I yuwm BY I 52%;;ACHMANN A RNEY.

April 16', 1940. B.W. AMMANN ET AL WINDING MACHINE ll Sheets-She'tS Filed March 31, 1938 '18 Illl llllllll Ill. 5 n #YNNN w wsw A|| B 6 6 m I 2 F 6, m a s INVENTORS B.W.AMMAN N O.L.BACHMANN April 16, 1940- B. w. AMMANN ET AL WINDING MACHINE Filed March 31, 1938 ll Sheets-Sheet 4 INVENTORS .W. AM MAN .L.BACH MA ATTORNEY.

' April 1940- B. w. AMMANNHET AL 2,197,117

WINDING MACHINE Filed March 31, 1938 I1 Sheets-Sheet 5 INVENTORS law. A M M AN N 3 5 o. BACHMANN 5-x, v BY m ATTORNEY.

April 16, 1940.

B. w. AM'MANN ET AL WINDING MACHINE Filed March 31, 1938 11 she ts-sheets MN N mm B M M B 0.L.BACH MANN BY ATTO April 1940 s. w. AMMANN ET L. 2.197.117

" WINDING MACHINE Filed March 51, 1938 11 Sheets-Sheet 7 INVENTORS' B.W.A M MANN KACH MANN A fiQRNE? i April 1940- B. w. AMMANN ET AL 2,197,117

WINDING MACHINE Filed March 31, 1938 ll Sheets-Sheet 8 INVENTORS B-W.. A M MAN N By fl0$BACHMANN ATTORNEY April 16, 1940. s. w. AMMANN ET AL.

WINDING MACHINE ll Sheets-Sheet 9 Filed March 51, 1938 1 INVENTORS l J M fly M MH. m M Z17. Am] m w 1 April 1940 B. w. AMMANN ET AL- WINDING MACHINE I 11 ShetS-Sheet 10 Filed March 31, 1938 I FIG-.30. Q /WW INVENTORS B.W. AMMANN ygfg BAC H M A N N ATTORNEY.

April 16, 1940. B. w. AMMANN ET AL WINDING MACHINE Filed March 51, 1938 ll Sheets-Sheet 11 W mMA H v MAM .N E m VMm w A g Patented Apr. 16, 1940 Bernard WINDING'MACHINE Ammann and Otto LBachniann,

St; Louis, Mo., assignors to Wagner Electric Corporation, St. Louis, Mo., a'corporati on of 1 Delaware Application March '31, 1938, Serial No. 199,142

16 Claims. (01. 242-1) Our invention relates to a winding machine and more particularly to a machine for applying coils to the stator of a motor or to any other annular structure requiring the application of coils to slots formed inthe inner face thereof. In the form shown it is designed to apply the coils to a four pole stator, each pole of which is produced by four coils separated by the teeth between the slots. In our machine the stator is carried in an oscillating chuck, the wire being threaded through the stator by a shuttle carrying a plurality of strands so that the coils of at least two poles are simultaneously wound.

One object of our invention is to provide improved means for imparting the oscillatory motion to the chuck and for automatically controlling the amount of movement thereof to cause the successive coils to embrace the propernumber of teeth.

Another object of our invention is to provide effective wire gripping means for engaging the strands at each end of the shuttle stroke to draw them into the slots and to form the desired loops at the ends. Such gripping means is so constructed as 'to effectively engage and release the wire and is so formed as to avoid injury to it either from kinking or marring the insulation. The latter result is particularly liable to occur with enameled wire if the gripping means is not properly designed.

A further object of our invention is to provide a readily variable control device by means. of

which the number of turnsper coil is regulated, said device functioning through the chuck oscillating means which it automatically varies when the number of turns for which it is set have been applied. s

Other objects of our invention are to improve various details of construction in winding machines as set forth in the following description and pointed out in the claims.

In the accompanying drawings which illustrate one form of winding machine made in accordance with our invention Figure 1 is a side elevation, partly in section; Figure 2 is a section taken on the line 2 --2 of Figure 1; Figure .3 is a section taken on the line 3-3 of Figure 1; Figure 4 is a top plan view, the wire gripping fingers and their actuating parts being omitted for convenience of illustration; Figure 5 is an end view taken in the plane indicated by line 5-5 of Figure 21 and showingfjfthe adjustable throw mechanism for varying the amount of oscillation of the stator chuck; Figure 6 is an end view 01' the guide sleeve for the rack shown in Figure'5; Figure 7 is a section taken on the line '!-1 of Figure 6; Figure 8 is a view, partly in section, showing the rack shown in Figure 5 and its operating plunger;

Figure 9 is a section taken on the line .9--9 01 Figure 8; Figure 10 is a detail view of the cam for ,a'ctuating'the plunger shown in Figures 8;

and 9; Figure 11 is a side elevation-of the pedestals supporting the gripping finger mechanism and the stator chuck; Figure 12 is a detail view of the Genevawheel for controlling-the intermittent movement of the stator chuck; Figure 13 is a view taken in the plane indicated by the line l3-l3 of Figure 5, the rack. bar and block only being shown; Figure 14 is an end view of the parts shown in Figure 13; Figure 15 is a bottom plan view, partly in section, taken-invv wire guide horns applied thereto, and diagram:

matically illustrating coils applied 'to one pole thereof; Figure 20 is a side View, partly in section, of one of the horns shown in Figure 19; Figure 21 is a horizontal sectional view illustrating the mechanism for imparting. intermittent oscillatory.

movement to the stator chuck and for controlling the degree of movement thereof; Figure 22 is a vertical transverse sectional view taken approximately on the line 22-22-0f Figure 4 and showing the driving means'for imparting intermittent reciprocation to the shuttle and illustrating one form of change speed gearing; Figure 23 is a vertical longitudinal section taken on the line 23-23 of Figure 22; Figure 24 is a detail sectional view taken on the line 24-'-24 of Figure 11; Figure 25 is an enlarged side view, partly in section, of themechanism for determining the number of turns of wire applied to form a coil; Figure 26- is a section taken on the line 26-26 of Figure 25; Figure 2'7 is a section taken on the line 21-21 of Figure 26; Figure 28 is a front elevation of the parts shown in Figure 11, the stator chuck being shown in dotted lines; Figure 29 is an end view of one of the gripping finger slides, the

fingers being shown in closed position; Figure 30 is a section of the slide takenon the line 3030.'-

-mechanism; Figure 34 is a schematic elevation of the chuck operation means including the device for securing variable throw of the chuck and the Geneva movement for securing a dwell at the end of the throw; and Figure 35 is a schematic elevation showing the finger slide operating connections.

The frame of the machine comprises a main vgaging a worm wheel 1.

housing I, a base 2, preferably formedintegral 'therewith,;an'd aremovable cap 3. Enclosed in .the base 2 is a motor 4 for-driving the machine.

Onone end of the driving shaft 5 is a worm 6 en- The worm and wheel are enclosed in a gear housing 8' secured to the under side of the main housing. Wheel"! iscarried on a vertical shaft 9 extending up into the main housing and carrying a miter gear In (Figure 22) meshing with a gear II- on the driving shaft 12 of a change gear mechanism. Mounted on'shaft I2 are gear wheels i3 meshing withvgear wheels l4 on a counter-shaft l5. This shaft has .slidingly mounted in it a controlbar i6 carrying aspi ing-pressed dog ll adapted to engage with recesses l8 in'one or the other of the wheels [4 and so vary the relative speed of the machine to the driving motor.

The bar I6 is provided with iaknob l9-extending through the rear side wall of the main housing (see also Figure *4).

' Carried on the end of the counter-shaft is a miter gear 20 meshing with a gear 2| on the main driving shaft 22 which extends longitudinally throughout substantially the entire length of the .machine. The speed changing mechanismis enclosed in a gear change box 23 carried on the rear side wall of the main housing (see Figures 1 and 23).

nism, indicated by A in the schematic drawings,

is shown in detail in Figure 23. Gear 28, acting through the clutch mechanism indicated .by B and shown in detail in Figures 25 to 27, controls the degree of oscillation imparted to the chuck by the gear train C including the Geneva wheel shown in detail inFigures 12 and21 and actuated from a spur gear 29. The main shaft also carries a mutilated gear 30 and a pair of cams 3| and 32. This gear, through lever connections indicated at D and shown in Figures 11, 15 and 28, actuates the gripping finger slides. The opening of the finger is controlled bya second-set .of lever connections indicated at E and shown in detail in Figures 11 and 28.

Mounted on the main housing are front. and rear pedestals 33 and 34 and onthe cap-3, a bracket 35. Formed in the top of the cap is a T-slot 36 to receive the .flanges of a carriage 31. Clamped in this carriage is the rear end of the shuttle plunger 38. This plunger is tubular and its forward part slides in the bracket 35, as best shown in Figure 17. Mounted on a stud 39 carried by the bracket and forming part of the plunger guide is a U-shaped frame 40, the forward end of which provides the stator chuck 4| which is located between the pedestals, as shown in Figure 11. Ball bearings 42 are interposed between the stud and the member 40. Any desired means may be used to hold the stator 43 in the chuck. We prefer to employ air-actuated clamps, preferably three in number, one of which is shown in section in Figure 17. Each clamp comprises a piston 44 having a roughened face to contact the periphery of the stator. The piston is normally held in retracted position by a spring 45 and is provided with a packing cup 46. The end of the bore of the clamp is closed by a plug 41 carrying an air connection 48. The flow of air to and from the clamps iscontrolled by a suitable valve (not shown). To insure proper positioning of the stator with relation to the chuck, the stop flange .of thelatter isprovided witha .pin 19' to :engage with onev or the other of a pair of holes 50 in'the "stator 'near' its outer edge at .a distance 'of '90 degrees apart. The

stator is also provided with four "holes 5| near the-face of the centertootn of each pole. These holes -'are engagcdbythe s'clamp pins 52 of a windinglhorn 53 having at each end a curved recess "54 intowhich the send connections of the coils are drawn.

To oscillate the stator .chuck 4| its hubis provided'with a pair of lugs-55-rpivoted to a connecting rod 56 (Figuresilandll) The lower end of this rod engages a crank-pin 51 .(-Figures-21-and .32) carried-bye. bifurcated .block'58 sliding in a head "59. The :innerfaces of this block are pro- 'vided with rack teeth tliscut 'at an angle of 45 degrees. 'These teeth mesh with: similar teeth 6 I formed on'the edges of airectangularubarfl (see Figures 113 and 14). It will be seen that when the bar '62 is moved longitudinally through'the block, the latter willbemovedin the head to vary the distance between the .axis' of rotation of the head and the axis of the crank-pin-and hence will vary the amount o'fzoscillation of the stator chuck.

The end of the bar-62-isprovided with-a .head 63 engaging witha bayonet slot '64 .in the end of a round bar 65. This bar slides in a sleeve 66 formed integral withor rigidly secured to the head 59. The sleeve fits snugly on and rotates around bar 65. To support the rack bar it slides through a: guide block G'I positioned in the enlarged endof thesleeve bore and provided with a rectangular opening 68 snugly filling the bar. The flattened end oflbar 65 is provided witha roller 69 engaging the groove of a cam disk H which intermittently operated as will be hereinafter described. The sleeve 66 is mounted in roller.v bearings 12 carried in a'frame I3. Mounted on the sleeve is a gearwheel by means of which it isrotated. The rotation of the sleeve 'will' act through wrist pin-51 and connecting rod 56 to swing the stator chuck through a definite arc dependent upon thedistance of the wrist pin from the center of rotation of the sleeve. When this distance is varied by longitudinal movement of bar-65, the arc will be varied so that the loop of wire will include a greater or less number of stator teeth.

Meshing with gear 14 is a gear mounted on a short shaft 16 mounted in ball bearings 11 carried by the frame vl3. As it is desirable thatthe stator chuck remain stationary for a time at each end of its arc of travel, during which time the shuttle plunger 38 passes through the stator in one or the other directiomshaft 16 has mounted on it a Geneva wheel 18. This wheel is actuated by a double-ended arm 19, shown in; detail in Figure 12. This arm is'mounted :on a shaft 80 '(Figures 21, 32 and 34) also carrying a gear wheel Bl driven from the gear'29 on the main shaft 22 through an idler 82.

The cam disk H (Figure 21) is mounted on a transverse shaft 83 also carrying a gear 84. Gear 84 meshes with a gear 85 forming part of the clutch mechanism shown in detail in Figures 25 to 27. Thepurpose of this clutch mechanism is to move cam II through'a part only of a revolu-. tion when the winding of a coil is completed. The cam, as shown in FigurelO, has four stations or positions for winding a stator having four coils per pole. In this case the ratio between .gears 84 and 85 will be four to one. It

will-be understood, however, that if a stator having a different number of coils per pole is to movement of the wheel during the downward;

anemia? be wound, this ratio may be varied. Gearfli t is rigidly mounted on a shaft iournaled;,pref+ erably by means of'ball bearings 91', in a scyli'ndri cal casing 08 secured 'to and.extendingrthroughr the rear wall of the; mainhousing; I; Freely; mounted'on shaft 88' is-agear 99 3-mesh'ing .;with*.

the gear 28 onthe shaft-zli an-d hencecon'stant ly rotated fromthe main 'shait 22. Gear 09=-car.-- ries a part 90 having endclutch'teethfor engagement with end clutch teethon' a" sleeve :BIsliditi'g by means of teeth 93in orderto'permit'longitudi nal movement of the sleeve butto preventtrelative rotary movement betweenit and collar" and shaft. A coil spring. 94 bia'ses toward clutchengaged position. This movementiis normally prevented by means of the engagement 'of' 'arpin; 95 with an end cam 96:form'ed 'onthevgroovedi. This pin "-is carried; by, a: lever 91 pivotedto the housing walL. Thespin portion of the sleeve;

is normally held'in position in-the groove offthe' sleeve by a coil spring 98 interposed between the lever and an abutment 99 "on the housing :wall; An adjustable stop I00 limits: the "movementof the lever. Pivoted to the lever'9'l is a dog.I0.I; the movement ofwhich in one direction is limited by contact with a shoulder I02; Mounted'on-itthe same pivot as the lever 9-1'is a similar lever I031. The pin I04 of this lever engageswith a Vshaped..

groove I05 inthe periphery of sleeve 9|." When the sleeve has made a complete-rotation; the? pin enters the groove to provide acheck-v preventing over-rotation due to momentum of'rthe parts. As this is the only purpose of this lever, it is not provided with the'stop and dog.

Lever 91 is actuated to control the movement. of cam II through the clutch mechanism B by an" indexing ratchet wheel I06 mounted on a stud I01 carried by the rear side wall of the main" housing. The hub of this wheel is surrounded-by a torsion spring I08 (Figure 21) whichtends to move the indexing wheel in the directionindicated by the dotted arrow in Figure 25 andso. return the wheel to zero position; The wheelzis=- actuated from a cam I09 on the outerend'ofa' shaft 26. This cam has just'suflicient' movement to advance the index wheel the distance oii oner of the teeth IIO on its periphery. Cam I09i isconnected by pitman vIII toa bar .2 slidingly mounted in a ratchet box I I3 secured to the rear side wall of the main housing. Pivoted to'this; bar is a spring-pressed dog II4 which actuates In the box is a transverse slide the index wheel. H5 carrying a detent lit for preventing return movement of bar H2. A spring I I1 tends tomove slide H5 away fromthe wheel and thusdisen-z' gage dog IIB therefrom. This. movement "is nor.- mally prevented by engagement of a shoulder on trip lever I3I with an abutment llfl on" the slide, The slide engages withone arm ofTa beIi-w crank lever II9, the other arm of'which isjposi' tioned a short distance above a pin. I20i on:bar. H2. The distance betweenthe horizontaliarm: of the bell-crank lever and pinv I20. when-slide.

H5 is in the position shown in Figurev 25 issuiflcient to permit the vertical movement of the pin without actuating the lever.

When, howon itsa pi'vot; I2$-inorderc'to disengage dog, I I4 as well as'dog: I'I 9fromr the :ratchet "wheel to permit itswreturnrto zero position; Thisz-positionris de-- termined? by any. suitable. stop: mechanism 1 such as abut'ments I20 and. I25 one-carried onthe housing: wall'iand :the. other'ion'tlie rear face of" by." meansof which dog: actuating fingers may" be securedat. any, desired". points in the. circumference of thewheel. Such a'flnger I21 is shown.

in Figure 25'fi'in:positiontor'engage dog Ill-I to I? and. engaging: with: the? projecting. end 01" screw: I22 formingrthepivotoi 'dog. 6.. Thus when-slide: ISI 531s released: it: will swing-bar I I2 start? the; clutch mechanism. While only. one

finger: isshownr for. the: purpose of illustration;

it 'wil'l lie-understood that as many fingers; are.

employed ias-r'there" are coils perpole' to "be wound on the stator; 'I'lieanumber of ratchet. teeth included-between= each successive pair of fingers In addition'to fingers "lithe-wheel .is also provided with a finger: I90 for, actuating. the trip lever I31 This finger I30"; should be so located as 'to engage lever" I3.-I atrthe exact time that the last finger"I2l"engagesdog I0'I. As it is desirable to automatically stop the motor at' the completion 'off the last coil; the index wheel is provided-with a projectingabutment I32. positionedito engage'thetmovable arm .I33Jof aswitch As shaftr26 carrying cam. I09:-is driven'from the mainshaft: il-atianzequalspeed therewith, the

cam actuates- -dog. I-Ilto-ieedthe' indextwheel forward one: toothaseachwloopis appliedto the. Duringsthis time: gear-8'9" turns idly on stator; shaft 8Giasthe'clutch teethare held out of engagement by pin-95: When, however, one of the fingers I2I""engages,dog% IIII; it'willswing lever 9T on its 7 pivot? and withdraw the' pin; This will permit'spring 94t'orengage the clutchiteeth. As sleeve 9I rotates with-the-shaft; it will'now 'be driven.thus causinggearfl" to drive gear 84 on cam shaft 83.. Gear. 85willimake one complete revolution at theendxoi which pin 95', which has again entered the circumferential groove in'the sleeve, .will'be' in positionitobe engaged by cam 96. At'the completion of the'revolution camv 96 will engage pin 95't0v disengage-the clutch. As the. ratio of gears 84"and 85" is-four to one, a revolution of: shaftf'80'. rotates shaft 83' through aniang leuof" degrees-,: thus-advancing the cam disk H a corresponding. amount: Thiswill,

through 1 the action of, canr slot 10 and roller: 69,v

move bar -61in the directlonzofl the arrow (Fig me 13.) and increase the throw of crank-pin: 51

to augment the-degree of oscillation of the "stator chuck; Whenathe end'ofatheflnal coilis reached finger' l'30-will actonf. lever I31 towithdraw dogs lIlandi'. I Ifie'fromthe index wheel so that it will.

be-returned'atowzero; position bythe tension of its spring: I08; Uponthe next upward stroke of pit.- manv II I; pin zl20iwilloperate lever II9 to return thesdogs to operative position- Carried2on.the;end;of shuttle. plunger 38 15a cross head I40; shown in; detail in: Figure 17.

This head carries a pair of grooved rolls I mounted adjacent the end of the plunger. Strands of wire S are delivered to these rolls through a pair of tubes I42 in the plunger. The two strands of wire are supplied to the opposite end of the plunger from rolls I43 (Figure 1) to which they pass from rolls I44 interposed between them and stationary rolls I45. Rolls I44 are carried by toggle links I46 so that the reciprocation of the plunger does not change the tension' of the wire. It will be understood that either at the point I or at some point beyond, the strands are controlled by some form of tension applying mechanism. Each strand of wire passes from roll I4I outwardly between a pair of rolls I88, one of which acts as a guide for ,the strand upon the forward movement of the shuttle and the other upon the rearward movement thereof. Rolls I88 are arranged to lie in a horizontal plane passing through the axis of the chuck.

Carried on the under side of the carriage 31 is a rack bar I41 meshing with segmental rack teeth I48 on' a wheel or disk I49 mounted to oscillate on a shaft I50 supported in bracket I5I (Figure 22). On the opposite end of this shaft is a small gear I52 which meshes with a rack I53 mounted on the rear face of a sliding block I54 carried on block I54 is a vertical slot.

speed as said main shaft so that av-shaped guide I55 secured to the rear side Formed in the rear face of I55 which is engaged by a wrist pin I56 on a wheel I51 mounted on stud I58 carried in a bracket I59 secured to the top of cap 3. Gear I51 meshes with gear wheel 21 driven from the main shaft 22 at the same a complete forward and backward stroke will be imparted to plunger 38 at each revolution thereof.

The mutilated gear 30 (Figure 16) is provided with teeth I6I which are just sufficient in number' to impart a complete rotation to one or the I62 and I63. These latwall of the cap 3.

ter gears operate in a manner similar to a Geneva wheel and are held against movement, except at the time of rotation, by means of concave faces I64 which contact with the smooth portion of the periphery of gear 30. Gear I62 is carried on a short shaft I65 journaled in a bracket I66 mounted on the front side wall of the main housing and gear I63 is carried on a shaft I61 journaled in a bracket I68 mounted on the rear side wall thereof. Shaft I65 is provided with a wrist pin I69 connected by a link I10 with the lower end of a finger slide operating lever I1I pivoted at point I12 to the front pedestal 33. This lever is connected by rod I18 pivoted thereto at a point I13 below I14 above the pivot I15 mounted on the other side of the pedestal 33. By this connection the two finger slides of the front pedestal will be simultaneously moved toward and away, from each other. Shaft I61 is provided with a wrist pin I connected by link I8I to a second pair of levers HI and I16, respectively, which are similar to levers HI and I16 but are mounted on the rear pedestal 34 and are arranged in reverse position to those on the front pedestal. The upper ends of all four of these levers are slotted for engagement with the gripping finger slides, one of which is positioned at each end of each pedestal. It is to be noted that each pedestal consists of two upwardly projecting supports I82 connected by webbed base I83, best shown in Figure 4. One or both of the pedestals is secured to the main housing its pivot I12 to a point e of a short lever I16 by bolts I84 engaging with T-slots I85 in the top of the housing so that the distance between the pedestals may be adjusted to accommodate stator cores of different thickness. Formed in each of the supports is a transverse T-slot I86 to receive a gripping finger slide I81 (Figures 18 and 30) which is fianged to prevent its lateral movement out of the slot. The slots I86 are formed in supports at such a height that the center lines of the slides will lie in the horizontal plane determined by wire guide wheels I88. The slide is provided with a cylindrical bore I89 in which slides a plunger I90. Pivoted in the end of the plunger are the shanks of a pair of gripping fingers I9I. These are curved in form and rounded in cross section in order to present no sharp corners or angles to the wire with which they engage. A plane passing through these fingers will be somewhat inclined to the vertical as shown in Figure 29. The meeting end faces I92 of the fingers are inclined to the horizontal plane determined by the shuttle. This construction facilitates the release of the strands, one of which is carried above and the other below the horizontal plane by the oscillation of the chuck. It will be understood, therefore, that the inclination of the fingers and their meeting end faces will be in opposite directions in the two opposing pairs of fingers. Formed on the shank of each finger is a front cam face I93 and a rear cam face I94 which cooperate with a cam block I95 carried on the end of the plunger. When the plunger is in its forward position, as shown in Figure 19, the fingers will be opened and when it is in its rear position, as shown in Figure 31, they will be closed.- A coilspring I96 biases the plunger toward the position shown in Figure 19. To retain the plunger in its retracted position, the slide has pivoted to it a detent I91, the inner which engages with a shoulder I98 formed in the plunger. The outer end of the lever is pro vided with a rounded projection I99 for engagement with releasing mechanism hereinafter described. v The plunger is also provided with a projecting pin 200. Formed'in the support I82 is a groove adjacent its T-slot. Positioned in this groove is a bar 20I (Figure 24) having a slot 202 for the reception of the projection I99 and pin 200. The opposite face of the slide carries a pin 203 surrounded by a bearing block 204 working in the slotted ing levers.

Cooperating with each of the cams 3I and 32 are finger release connections, one for the fingers carried by the front pedestal and the other for those carried by the rear pedestal. As these connections are duplicates, only one will be described. A short rock shaft 205 is supported in brackets 206 and is provided with an arm 201 engaging with the cam. At each end of the rock shaft is a crank arm 208 on which rests the lower end of a vertical rod 209 slidingly mounted in the pedestal. The upper end of this rod contacts with an arm 2I0 carriedon one end of a rock shaft 2 I I (Figure 28) journaled in a boss on the pedestal and having mounted on its other end a trip finger 2 I2 adapted to operate through an opening 2| 3 (Figure 24) to release the detent I99.

in line with a shaft 220 mounted in a bracket n The shuttle headillll threads the two strands pinned to shaft 220, against the bracket. The

sleeve has a bore forming a bearing for the end of shaft 2". On-the end of the sleeve are clutch teeth 225 for engagement with clutch teeth 22 on a collar 221 pinned to shaft 2". When it is desired to actuate the machine by hand, shaft 220 is forced rearwardly to engage clutch teeth '22! and 226 when motion may be transmitted through the motor to the machine; a

The operation ofour device is as follows The two strands of wire S being led through the guide pipes "I42 in the shuttleplunger are each passed'around one of the grooved rolls I (Figure' 1'!) and between the rolls lit-its end "being attached either to stator 48 'or to chuck in which it is held. It w ll be-understood that :the arms of the U-shaped' frame l stand in vertical" positiomas shown-in'liigure 11,-;whenthe chuck =is inithe Lcenter of-its throw. In Figure 1'7, for

frame will not, therefore,- i'nteri'ere with themovement of the-.gripping-fingers of the rear pedestal.- -Two winding horns 533 are .applied to stator 43 at thecenter points of two opposing poles. These hornsv standjinhorizontal posi tion-when the statoris in mid-point ofitsthrow.

of wire through the statorwhen'itv isat one or the otherflend of its throw, in. which position it is heldstationary fora time by the action of Gene'vagear It. The shuttle will position the strands of wire adjacent 'the inner periphery ofthe stator, one'iniront o'f thefirstcoil ;slot;above one winding horn and the other .in front of the first coil slot below the o'ifherhorn.v W'hilecthe parts are in this position, the correspon din'g" sear It! or, i6! 'is ,actuated by the. mutilated s ar Il-to actuate levers, I'll andili to" move the' finger slides toward each other... The slides are advanced withtheir fingers in open position so that the fingers'will embrace the-strands.

.Just before the end of: the stroke is reached, pin

.- 20. comes in. contact withthe endi-ofslot 202 causing cam block I" .to closev the fingers around the wireson the return stroke 01' the finger slides the wires will be carried outwardly vdrawing them into the stator slots andforming loops through which the ends of the winding horns pass as the chuck moves'to the opposite end of its throw. After; this has been reached, trip finger H2 is actuated from'cam' 3| through :the

connections heretofore described. As slide I81 is now at the outer end of its movement, detent IIQj'stands'in front of the trip dog and is actuated by it to .releasethe plunger and so, permit spring I98 to move it into position to open the fingers and release the wire. The wire is now drawn into recess 54 of the winding horn by the movement of the shuttle. This operation is repeated at the opposite end-of the stator by.

the other set oi gripping fingers, thus applying one turn of wire to one toothzof two opposing poles. After the desired number of turns have been applied to complete the coil, finger I21 actuates the clutch mechanism shown in Figure 26 to advance cam ll one-quarter of a turn to ner.

tuates lever 91 to withdraw pin 95 from the end Contact of finger l2'l with dog IOI accam 96. This permits spring 94 to move sleeve ill to engage its teeth with those on part 90,

driven from the 'main shaft 22 by means of bevel gears 24, 25, shaft 26, and gear 28, (see Figure 33) which gear meshes with gear 89 integral with said partBll. This rotates shaft 86 through one complete revolution. At the end of the revolution pin 95, which has returned to normal position by passage of finger I21 beyond dog IOI, engages camfli to separate parts 90 and 9|. The rotation of shaft 86, through its rigidly attached gear 85, drives gear 84. As the ratio of gears 84 to 85 is four to'one, gear Ilandits shaft 83 are rotated through'one fourth of-a revolution. This. moves cam .disc 1'" (Figures .10 and 21) from itsfirst to its secondposition, movingbar 65 longitudinally in sleeve 26; This, through .the action of miter racks 58 and 82, moves crankpin 51 fartherv from the center of rotation of, head 59 and so increases the movement of connecting rod 58 and. consequ'ently,ithelthrow of th'e chuck. The machine will now apply'."turns' of wire em-- bracingthree stator teeth instead of one. After all the coilsfhave been-applied to complete the two opposite poles, the index deviceisereturned to zero, position by contact 01' finger vii with detent; III and the motor is, stopped by con.- tact of abutment, .132 with switch arm I32. The stator is now removed from the chuck and the winding horns detached. This is .doneby'loosening the screws 52 and drawing the {horn toward" the center of the-*stator. The horns are now' applied to the stator. in" "a position at right-angles to their original position and .the remaining."

poles of the stator wound :in the same manner. Having fully described our invention, what we claim as new and desire to secure by Letters .2815?" I ent of the Un ted Statesis:

I 1 In a winding machine, the combination with oscillating workl holding chuck." of a reciprocating-shuttle for threading a, strand "of 'wire through chuck, a wire engaging -device posi-'- .tioned at each end -of the chuck, eachor' said devices comprising a pair of curved fingers inclined to the normal plane of the. loop io'rmed by the shuttle and having abutting ends; ,means for opening and closing said fingers, and means for moving the devices in adirectiontransverse to the travel. of the shuttle. v n

2. In a winding machine, the combination with an oscillating workholding chuck, of a reciproeating. shuttle for threading a strand of wire through thechuck; a wire engaging device positioned at each end of thechuck, each of said de-: vices comprising a pair of curved fingers'having abutting end faces,*said .faces being inclined to the no'rmalplane of the loop formed by the shuttle, means for openin and closing said fingers,

and means for moving the devices in a direction transverse to the. travel of the shuttle. g I 3 In a winding machine, the combination with an oscillating work holding chuck, of a reciproeating shuttle for threading a strand of wire sliding block carrying said wrist pin, a miter rack and means for moving the devices in a direction transverse to thextravel of the shuttle.

4. In a winding machine, the combination with an oscillating work holding chuck, of a reciprocating shuttle for threading a strand of wire through said chuck, a wire engaging device arranged at each end of the chuck, each of said devices comprising a support, a member sliding in said support,a pair of fingers pivoted to said support and having meeting ends, a spring-actuated plunger moving in said member and provided with cam faces for actuating the fingers, a stop for moving the plunger relatively to the member in one direction, and means for releasing the plunger to permit the spring to move it relatively to the member in the other direction.

5. In a winding machine, the combination with an oscillating work holding chuck, of a reciprocatingshuttle for threading a strand of wire through said chuck, a wire engaging device arranged at each end of the chuck, each of said devices comprising a support, a member sliding in said support, a pair of fingers pivoted to said support and having meeting ends, a plunger moving in said-support and having cam faces for actuating the fingers, a spring biasing said plunger in one direction, a stop for compressing said spring, a detent for holding the plunger against the pressure of the spring, and cam-operated means for releasing the detent.

6.- In a winding machine, a work holding chuck, means for oscillating said chuck, and. an automatic control for the chuck, said control com prising a ratchet wheel moved in unison with the chuck oscillations, means for varying the arc of throw of the chuck, a clutch governing the movement of said latter named means, and an adjustable abutment on the ratchet wheel controlling the operation of the clutch.

7. In a winding machine, a work holding chuck, means for oscillating said chuck, and an automatic control for the chuck, -said controlcomprising a ratchet wheel moved in unison with the chuck oscillations, a cam for varying the arc of throw of the chuck, a clutch governing the movement of said cam, and an adjustable abutment on the ratchet wheel controlling the operation of the clutch; Y 8. In a winding'machine, a Work holding a clutch governing the movement of said latter named means, and an adjustable abutment on. the ratchet wheel controlling the operation of the clutch.

9. In a winding machine, a work holding chuck, driving means for oscillating saidchuck through varying degrees of arc, said means comprising a connecting rod, a wrist pin driving said rod, a

for moving said block to vary the throw, of the pin, and'indexing means for controlling the movement of said rack.

s 10. In a winding machine, a work holding chuck, driving means for oscillating said chuck through varying degrees of are, said means comprising a connecting rod, a wrist pin driving said rod, a sliding block carrying said wrist pin, ,a miter rack for moving said block to vary the uck. means for oscillating said chuck, and an'autothrow of the pin, a cam fol-moving 'saidrack, and indexing means for controlling the'movement of the cam.

11: In a winding machine, work holding chuck, driving 'meanS for oscillating said-chuck through varying degreesof arc, a rotary part carrying a transversely movable block, intermittent driving means for said part, a member movable longitudinally. in said part to move the block to. vary the'pin throw, indexing means for controlling said longitudinally movable memben anda driving connection between the pin and the chuck.

. l 12. In a winding machine, a work holding.

chuck, ,driving means for oscillating said chuck through varying degrees of are, said means comprising a'rotary member, a block mounted to slide transversely in said member, said block carrying a wrist pin and having miter rack teeth,

slide transversely in said member, said blockfcarrying a wrist pin and having miter rack teeth, a rack bar movable longitudinally in said rotary member, said rack bar having miter teeth en'g'ag} ing with the teeth of the block, acam', a push rod actuated by the cam, said push rodhaving 35' a connection permitting relative rotary movement between it and the rack bar, indexing means for moving the cam, and a connection between the wrist pin and the chuck.

14. In a winding machine, the combination 40' with an oscillating chuck, of a reciprocating shuttle for threading a strand of wire. through the chuck, driving means for 'said shuttleinclud-l ing a sliding carriage, a rack carriedby. said carg riage, a member having an arcuate rack engaging said first named rack. and meansforimpart ing oscillating movement to said member. U 15. In a winding machine, the combination with an oscillating chuck, of a reciprocating shuttlefor threading a strand of wire through the chuck, driving means for said shuttle including a sliding carriage, arack carried by said carriage, a member mounted on a rock shaft and having an arcuate rack engaging said first named'rack,

a second member mounted on said rock shaft and also provided with an arcuate rack, and a reciprocating rack engaging with said second named arcuate rack. 4 a

16. In a winding machine, the combination with an oscillating chuck, of a reciprocating shut.- ,tle for threading a strand of wire through the chuck, driving -means for said shuttle including a sliding carriage, a rack carried by said carriage,

a member mounted on a rock shaft and/having an arcuate rack engaging said first named rack,

a'second member mounted on said rock shaft-and also provided with an arcuate rack, a sliding block carrying a rack engaging with said second. 1

named arcuate rack, and a driving wheel carrying a wrist pin engaging a slot in said sliding block.

' B. W. AMMZANN;

o. L. BACHMANN. I 

